102402422221 has 16 divisors (see below), whose sum is σ = 119719283328. Its totient is φ = 86638939200.

The previous prime is 102402422183. The next prime is 102402422231. The reversal of 102402422221 is 122224204201.

It is not a de Polignac number, because 102402422221 - 2⁷ = 102402422093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102402422192 and 102402422201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102402422231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5460270 + ... + 5478991.

It is an arithmetic number, because the mean of its divisors is an integer number (7482455208).

Almost surely, 2^102402422221 is an apocalyptic number.

102402422221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

102402422221 is a deficient number, since it is larger than the sum of its proper divisors (17316861107).

102402422221 is a wasteful number, since it uses less digits than its factorization.

102402422221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10939332.

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 102402422221 its reverse (122224204201), we get a palindrome (224626626422).

The spelling of 102402422221 in words is "one hundred two billion, four hundred two million, four hundred twenty-two thousand, two hundred twenty-one".